Date: Wed, 25 Jul 2018 10:35:35 -0400 From: Ralph Smith <ralph@ralphsmith.org> To: Per olof Ljungmark <peo@nethead.se> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: rpi3 and Adafruit GPS hat continued Message-ID: <6DCECF08-1366-4289-9929-94A967284291@ralphsmith.org> In-Reply-To: <2aee4fd4-c221-23a6-00e4-1db2694bfef6@nethead.se> References: <d1341718-f8a3-31f9-9ac4-24b7a2de51d9@nethead.se> <CANCZdfrDXytg%2B3a5O%2BHch5fMhm85Uf5GGKKVP=AfbPydO-c22Q@mail.gmail.com> <ba6d3be7-73ed-46b7-df87-0cf98b035397@nethead.se> <2f55aaea-6832-7441-1011-b8288628a4a9@nethead.se> <CF8A1708-2D3E-414C-92BA-442999DDBB37@ralphsmith.org> <2aee4fd4-c221-23a6-00e4-1db2694bfef6@nethead.se>
next in thread | previous in thread | raw e-mail | index | archive | help
Sent from my iPhone > On Jul 25, 2018, at 10:26 AM, Per olof Ljungmark <peo@nethead.se> wrote: >=20 >> On 07/25/18 12:35, Ralph Smith wrote: >>=20 >>=20 >> Sent from my iPhone >>=20 >>>> On Jul 25, 2018, at 5:55 AM, Per olof Ljungmark <peo@nethead.se> wrote:= >>>>=20 >>>>> On 07/25/18 11:27, Per olof Ljungmark wrote: >>>>> On 07/25/18 04:25, Warner Losh wrote: >>>>>=20 >>>>>=20 >>>>> On Tue, Jul 24, 2018 at 1:44 PM, Per olof Ljungmark <peo@nethead.se >>>>> <mailto:peo@nethead.se>> wrote: >>>>>=20 >>>>> Thanks to >>>>> http://freebsd.1045724.x6.nabble.com/Adding-a-GPS-Module-hat-shield-= on-a-Raspberry-Pi-td6236680.html >>>>> <http://freebsd.1045724.x6.nabble.com/Adding-a-GPS-Module-hat-shield= -on-a-Raspberry-Pi-td6236680.html> >>>>> and helpful people on the list I managed to get the pi to boot by >>>>> silencing the console messages in u-boot. >>>>>=20 >>>>> I skipped the switch and patched rpi.h: >>>>>=20 >>>>> @@ -85,10 +87,13 @@ >>>>> #define CONFIG_INITRD_TAG >>>>>=20 >>>>> /* Environment */ >>>>> +#define CONFIG_SYS_DEVICE_NULLDEV >>>>> +#define CONFIG_SILENT_CONSOLE_UPDATE_ON_RELOC >>>>> +#define CONFIG_SILENT_CONSOLE_UPDATE_ON_SET >>>>> #define ENV_DEVICE_SETTINGS \ >>>>> - "stdin=3Dserial,usbkbd\0" \ >>>>> - "stdout=3Dserial,vidconsole\0" \ >>>>> - "stderr=3Dserial,vidconsole\0" >>>>> + "stdin=3Dusbkbd\0" \ >>>>> + "stdout=3Dvidconsole\0" \ >>>>> + "stderr=3Dvidconsole\0" >>>>>=20 >>>>> and now the pi is booting. >>>>>=20 >>>>> Now to the next problem, I need to rewire TXD and RXD and add recept= ion >>>>> of the PPS signal on pin 4. The advice in the link above is not >>>>> appclicable to current and rpi3. >>>>>=20 >>>>> Right now uart1 is wired to the RXD and TXD pins, I want uart0. Is i= t >>>>> recompile a dts or use gpioctl? >>>>>=20 >>>>> uart0: <PrimeCell UART (PL011)> mem 0x7e201000-0x7e201fff irq 24 on >>>>> simplebus0 >>>>> uart1: <BCM2835 Mini-UART> mem 0x7e215040-0x7e21507f irq 32 on >>>>> simplebus0 >>>>> uart1: console (115200,n,8,1) >>>>>=20 >>>>>=20 >>>>> I'm pretty sure that you'll need to hack dts. >>>>=20 >>>> Yes. Most importantly, stop the kernel from talking to the serial conso= le. >>>>=20 >>>> I've been wandering around the source and right now the theory is to >>>> change /usr/src/sys/gnu/dts/arm/bcm283x.dtsi, it is the only place in >>>> all the included dts files where I find a reference to the console: >>>>=20 >>>> chosen { >>>> stdout-path =3D "serial0:115200n8"; >>>> }; >>>>=20 >>>> Says nothing about stdin though, not anywhere. >>>=20 >>> Tried stdout-path =3D ""; but that did not help. >>>=20 >>> I'm giving up and move to rpi2 and 11.2 instead. Phew. >>=20 >> Just another gotcha to worry about: be aware of the difference between th= e rpi2 board versions 1.1 and 1.2. They quietly changed the SOC, so FreeBSD 1= 1.1 would not boot on the rev 1.2 board. It will boot FreeBSD 11.2, but I=E2= =80=99ve not tried the GPS HAT on that yet.=20 >=20 > I have dug out a rpi2 v1.1 and now wandering what image to boot, the > v1.1 is armv7 but can't find any images for 11 and armv7. Does this mean > I have to build it? The idea here was to aviod 12 due to the dts shuffle. For 11 you will need to use armv6.=20=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?6DCECF08-1366-4289-9929-94A967284291>